The Red Top 25 is the official starter battery for the 2007 Panoz DP01 Champ Car.

Varley batteries are pricey but they have the highest energy density of just about any battery available. Many race cars manufactured in England have battery compartments specially designed to accept these batteries and nothing else fits properly. They can be used in any position and resist leakage even if the outer casing becomes damaged. These batteries are considered non-hazardous freight and can be shipped by air or ground.

Note: Some other batteries on the market may have similiar dimensions, but beware! They may not be suitable for use in a racing environment. A similar battery currently on the market was designed for use as a backup battery in stationary equipment. The manufacturer even recommends against its use in motor vehicles. DMS/Varley Red Top batteries are specifically engineered for motorsports applications.